Sebastian Vettel will miss this weekend's Saudi Arabian Grand Prix as he continues his COVID-19 recovery.

The Aston Martin team announced on Friday that Vettel would be replaced for a second successive race by Nico Hulkenberg.

He missed the team's deadline to show he was race fit, after it was disclosed on Thursday that Vettel had yet to test negative for the coronavirus.

Four-time world champion Vettel had been hoping for a significant upturn in his recent fortunes this season, but it has begun in disappointing fashion for the German.

He had to sit out last weekend's opener in Bahrain after testing positive, and now he will have to watch from afar again as racing goes ahead in Jeddah.

Reserve driver Hulkenberg finished 17th in Bahrain, with Lance Stroll 12th, as the Aston Martin team failed to finish in the points.

Aston Martin said in a Twitter statement on Friday: "@HulkHulkenberg will practice, qualify and race alongside @lance_stroll. Despite lack of mileage in the #AMR22, Nico coped well in Bahrain and we are sure he will do likewise in Jeddah. We expect Sebastian Vettel to be fit for the #AustralianGP."

Vettel, 34, won his world titles consecutively from 2010 to 2013, and he joined Aston Martin ahead of the 2021 season.

The Australian Grand Prix weekend runs from April 8-10 in Melbourne.

The Indian Premier League commences on Saturday with two new franchises, an alternative format and no MS Dhoni as captain for the 15th edition of the tournament.

Lucknow Super Giants and Gujarat Titans will make their IPL debuts when they lock horns at the Wankhede Stadium.

The iconic stadium in Mumbai will also stage the opening match, which will see defending champions Chennai Super Kings do battle with Kolkata Knight Riders in a repeat of last year's final.

CSK won the title for a fourth time last October, lifting the trophy in Dubai after the tournament had to be completed in the United Arab Emirates and Oman due to the coronavirus pandemic.

Dhoni stepped down as skipper just two days before the opening game and Ravindra Jadeja has been charged with the task of replacing him.

Crowds will be allowed back in the four stadiums in Mumbai and Pune, with 70 league matches and four play-off showdowns to come over a 65-day period.

NEW FORMAT A VIRTUAL REALITY 

There will be two virtual groups based on the number of IPL titles won, followed by how many finals teams have contested.

Each side will take on their group rivals twice and also face two matches against one team from the other group. They will come up against the other teams from a different group just once.

KKR will take on five-time champions Mumbai Indians twice, as they are both in Group A, while Sunrisers Hyderabad are in Group B along with CSK.

SUPER GIANTS AND TITANS READY FOR THE BIG TIME

Lucknow and Gujarat will start life in the IPL with high hopes of making a big impact.

KL Rahul will lead the Super Giants side that has Andy Flower as coach. Big things will be expected of Quinton de Kock, Jason Holder and Marcus Stoinis but Mark Wood has been ruled out, so Andrew Tye was brought in as a replacement.

Hardik Pandya was appointed as Titans captain and Ashish Nehra coach. Star spinner Rashid Khan and Mohammed Shami were standout signings for Gujarat. Aaron Finch must bring fireworks at the top of the order after he was a late replacement for Jason Roy.

JADEJA WITH 'BIG BOOTS TO FILL'

Dhoni had led CSK since the inaugural IPL in 2008, so it was the end of an era when he stepped down on Thursday.

The 40-year-old will continue to play for the Super Kings and it is India all-rounder Jadeja who will step up to skipper the defending champions.

Jadeja said: "I'm feeling good. At the same time, I also need to fill in big boots, [Dhoni] has already set the big legacy so I need to carry [that] forward. I don't need to worry too much because he is here so whenever I have a question to ask, I'll definitely go to him.

"He'll be my go-to person. He was and still he is today, so I'm not worried too much."

FIT FOR THE KINGS?

Punjab Kings went into the auction with the biggest purse and their new recruits will be expected to deliver.

Powerful all-rounder Liam Livingstone was picked up for a whopping Rs 11.5 crore and his England team-mate Jonny Bairstow was another acquisition.

New skipper Mayank Agarwal will look to South Africa paceman Kagiso Rabada to fire a new dawn for the franchise.

DeMar DeRozan sat out the Chicago Bulls' 126-109 loss to the New Orleans Pelicans on Thursday due to a groin strain which they feared may turn into "something bigger".

The loss meant the Bulls have suffered their fifth loss from their past six games, sliding to a 42-31 record and hanging on to fifth spot in the Eastern Conference.

DeRozan had been feeling some tightness in his groin recently, with a modest return of 21 points, four rebounds and two assists in Tuesday's 126-98 loss to the Milwaukee Bucks before sitting out against the Pelicans.

"DeMar knows his body better than anybody else," Bulls head coach Billy Donovan told reporters before Thursday's game.

"I think he felt like, 'Okay, this could get into something else a little bit more significant if I don't take care of this.'

"We just don't want it to turn into something bigger."

Donovan said the Bulls would know more on DeRozan's status on Friday ahead of their next game against the Cleveland Cavaliers on Saturday.

Giannis Antetokounmpo missed his second game in the Milwaukee Bucks' past three as they won 114-102 over the Washington Wizards but head coach Mike Budenholzer insists there is nothing to worry about.

The reigning NBA Finals MVP missed the game with a sore right knee, leaving Jrue Holiday to star with 24 points and 10 assists as the Bucks improved to 46-27.

Antetokounmpo also missed Saturday's 138-119 loss to the Minnesota Timberwolves with knee soreness.

"I don't think it's anything long-term or anything significant, but we'll see whether he travels tomorrow and make decisions on the game Saturday as we kind of see how he feels and learn more," Mike Budenholzer told reporters before Thursday's game.

Khris Middleton has missed Milwaukee's past two games with a sore left wrist but Budenholzer was bullish he would be available to face the in-form Memphis Grizzlies on Saturday.

"I fully expect him to travel with us to Memphis," Budenholzer said. "I think I'd go as far as to say we're hopeful he'll play against Memphis.

"We'll see how he does in the next day or two, but as of now, I'd expect him to be on the flight and we're hopeful that he'll play."

Brazil head coach Tite was emotional after his side's 4-0 win over Chile in World Cup qualifying on Thursday in what may his final game in charge on home soil.

Tite previously announced he would exit the role after the 2022 World Cup, having taken over in June.

During Tite's tenure Brazil won the 2019 Copa America, but were eliminated from the 2018 World Cup in the quarter-finals.

More recently, Tite guided Brazil to 2022 World Cup qualification in November with several games to spare, with Selecao currently unbeaten in their qualifying campaign with 13 wins and three draws.

Brazil are currently on a 10-game unbeaten run in all competitions, dating back to last year's Copa America final defeat to Argentina.

"It has many meanings, many situations," Tite said after the win over Chile about his final game as head coach on home soil.

"There are many and they are very particular. Many thanks to the fans who attended the Maracana today, thank you very much."

Tite may still lead Selecao in Brazil again with the postponed qualifier against Argentina yet to be re-scheduled although the match would be a dead rubber with both sides comfortably qualified, with appetite low for a re-match.

On the win over the Chileans, who appear destined to miss the 2022 World Cup, Tite praised his side's level of performance, without pinpointing individuals.

"Two aspects have swayed me: the players with the personality and confidence to come to the national team and repeat the performances of their clubs, this is difficult due to the expectation of wearing the national team's shirt," Tite said.

Brazil's next qualifier is away to Bolivia on Tuesday, where they will be without Neymar and Vinicius Junior after they picked up yellow cards against Chile forcing suspension.

Memphis Grizzlies ascending superstar Ja Morant will be out for at least two more weeks as he recovers from knee soreness, according to head coach Taylor Jenkins.

Morant has missed the Grizzlies' past three games with the complaint, with the injury perhaps being more serious than first thought as he is scheduled to miss perhaps the entirety of the remaining regular season.

While the Grizzlies are notorious for playing their cards close to their chest when it comes to reporting player injuries, there is likely no hurry to rush Morant back as the team has compiled a staggering 16-2 record in his absences this season.

Speaking before Memphis' 133-103 win against the Indiana Pacers on Thursday night, Jenkins said he was confident of Morant making a full recovery, even if the timeline is unclear.

"We expect him to make a full recovery before the playoffs, and we're excited about that with two and a half weeks left in the season," he told reporters.

"We'll offload him early, then he'll start reloading pretty soon here with that two weeks in mind to reevaluate."

Morant is the odds-on favourite to take home the NBA's Most Improved Player award, and will likely also receive some votes MVP further down the ballot.

Coach Mike Krzyzewski's fairytale ending is alive and well after Duke came from behind to knock Texas Tech out of March Madness 78-73 and move on to the Elite Eight.

Krzyzewski – affectionately known as 'Coach K' – is in the last season of his 42-year run as Duke's head coach, and is searching for his sixth national championship.

It was far from easy for the Blue Devils against a Red Raider side in their third Sweet 16 from the past four tournaments, trailing 33-29 at half-time.

In the final 15 minutes, neither team was able to build a lead of more than five points as it seesawed back-and-forth before two clutch Jeremy Roach jump shots gave Duke a 73-68 buffer with 1:33 remaining.

Duke's top NBA Draft prospect Paolo Banchero showed exactly why he is going to make plenty of money at the next level, scoring a team-high 21 points on seven-of-12 shooting to go with four assists and three steals as the best player on the court.

Devin Booker put on a show with 49 points as Chris Paul returned from a broken wrist as the Phoenix Suns clinched top spot in the Western Conference with a 140-130 win over the Denver Nuggets.

Booker's 49 points was a season-high, while 36-year-old Paul returned for the first time since February 20 with 17 points, including 15 in the first half, and 13 assists as the Suns secured their sixth straight win.

Three-time All-Star Booker shot 16-of-25 from the field and also had 10 assists, with Mikal Bridges contributing 22 points from eight-of-nine shooting.

The win means the Suns have secured the NBA's best record for the third time in franchise history, following on from 1992-93 and 2004-05.

Reigning MVP Nikola Jokic had 28 points with six rebounds and six assists for the Nuggets, who are 43-31 and holding on to sixth spot in the Western Conference.

Grizzlies and Bucks win without stars

The Memphis Grizzlies won again without Ja Morant with a 133-103 victory over the Indiana Pacers. Desmond Bane scored 30 points with five assists and five rebounds as the Grizzlies improved to 16-2 without Morant.

The Milwaukee Bucks triumphed without Khris Middleton (wrist) and Giannis Antetokounmpo (knee) with Jrue Holiday starring with 24 points and 10 assists in a 114-102 win over the Washington Wizards.

Pascal Siakam equalled his season-high 35 points as the Toronto Raptors beat the Cleveland Cavaliers 117-104 in a crucial game in the Eastern Conference playoff race.

DeRozan out as Bulls slide continues

The Chicago Bulls slipped to their fifth defeat from their past six games, going down 126-109 to the New Orleans Pelicans. The Bulls are fifth in the east with a 42-31 record, just ahead of the Cavs and Raptors (both 41-32).

The Bulls, who were without DeMar DeRozan due to a left groin issue, were dominated 40-24 by the Pels in the fourth quarter, led by Devonte' Graham (30 points including five three-pointers) and Jonas Valanciunas (16 points and 19 rebounds).

Zach LaVine was Chicago's best with 39 points in DeRozan's absence, going 12-of-23 from the field, while Coby White added 23 points off the bench including five triples.

Mexico and the United States shared the points in a tense 0-0 draw in Thursday's CONCACAF World Cup qualifier in Mexico City.

A victory for either side would have put them on the brink of qualification, but both will need to wait, with the result leaving United States and Mexico in second and third positions respectively with two matches remaining.

Costa Rica moved into fourth spot after their 1-0 win over CONCACAF leaders Canada - who missed out on sealing their spot for Qatar - with the Ticos now three points behind US and Mexico who are locked on 22 points.

In a game where Mexico had a lion's share of possession, it was the Americans creating the best of the chances, with Mexican goalkeeper Guillermo Ochoa looking spry at 36 years young.

Ochoa was called upon in the 14th minute to deny Yunus Musah, and again in the 36th minute to thwart Christian Pulisic to keep things deadlocked heading into half-time.

Pulisic had another chance just minutes into the second half, but his sharp chance was kept out by Ochoa as he finished the match with four saves. Hirving Lozano had a pair of chances for Mexico in the second half, but sent one over in the 57th minute, and one into the crossbar in the 80th minute.

US's final game away to Costa Rica on Wednesday is shaping up to have plenty on the line. The top three CONCACAF qualifiers will move on to the World Cup, while fourth-placed side will need to go through a play-off.

Naomi Osaka is through to the third round of the Miami Open after beating former world number one Angelique Kerber in straight sets.

Osaka won the first three games of the match to jump out to an early lead, securing the set with a double-break before breaking early in the second to cruise to a 6-2 6-3 win.

The story of the match was Osaka's ease in winning points against Kerber's serve, winning 41 per cent (15/37) of Kerber's successful first serves, while the German could only win 11 per cent (3/27) in the same category.

Britain's top-ranked woman Emma Raducanu suffered another early exit, on the wrong end of Katerina Siniakova's comeback 3-6 6-4 7-5 win.

Gareth Bale described the criticism he has been the subject of as a Real Madrid player as "disgusting" after leading Wales into a World Cup play-off final.

Bale has played in just five of Madrid's 42 matches in all competitions this season, totalling 270 minutes on the field – the equivalent of three whole games.

Once the most expensive player in world football, the winger was absent for Madrid's most recent match, a painful 4-0 defeat to bitter rivals Barcelona.

However, Bale was back and back to his best when Wales came calling on Thursday.

The 32-year-old captained his country to a 2-1 win against Austria in their play-off semi-final, scoring two sublime goals – the first a breathtaking free-kick.

Bale appeared to play through the pain barrier in a brilliant display, eventually making way while holding his groin.

The former Tottenham man appeared to enjoy the celebrations, but his tone shifted slightly when asked if he had a message for his critics in Spain.

"No," he told Sky Sports. "I don't need to send a message, honestly. It's a waste of my time.

"It's disgusting, they should all be ashamed of themselves. I'm not fussed. End of."

Bale has come into form at a great time for Wales, scoring five goals in his past four international appearances – more than in his previous 28 games for his country (four).

In European qualifying for the 2022 World Cup, only five players have been involved in more goals than Bale's eight (five goals, three assists).

Wales will play either Scotland or Ukraine for a place in Qatar, with that decider at home, where Bale and Co. are unbeaten in 17 games in all competitions.

Deshaun Watson was not charged by a second grand jury after it considered evidence of sexual assault and misconduct allegations.

The Cleveland Browns quarterback faces 22 civil lawsuits.

However, earlier in March, Harris County jurors did not find enough evidence for criminal proceedings, and Watson was again not indicted on Thursday after a Brazoria County grand jury also assessed the case.

"After a careful and thorough review of the facts and evidence documented in the reports prepared by the Brazoria County Sheriff's Office and the Houston Police Department, as well as hearing testimony from witnesses, the grand jury for Brazoria County has declined to charge Deshaun Watson with any crimes," Brazoria County District Attorney Tom Selleck said in a statement.

"Accordingly, this matter is closed."

Watson has strenuously denied the accusations since they emerged last year, overshadowing his attempts to push for a trade away from the Houston Texans.

He got his move to Cleveland after the first grand jury did not charge him.

Browns head coach Kevin Stefanski said last week: "Our organisation did a tremendous amount of background on Deshaun.

"We understand the concerns and questions that exist but are confident in the extensive work Andrew [Berry, executive vice-president of football operations and general manager] and his staff have done to feel confident about him joining our organisation."